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We present contemporary, historical, and literary evidence of civic learning and action in senior citizens’ lives and suggest a framework for understanding seniors’ various levels of involvement in civic activities. A seven‐stage civic involvement continuum emerged from real interviews with living older adults and simulated interviews with fictional and historical older adults. The continuum began with the fulfillment of basic needs through volunteering and ended with becoming an advocate of a specific cause. Implications for adult education practice are suggested. 相似文献
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Despite the importance of trustees for higher education institutions, few studies address how they influence the institutions they steward. To address this gap, we used a social network approach within a comparative case study design to evaluate how trustees interacted with two private, elite universities: Harvard University and the Massachusetts Institute of Technology. While trustees interacted with these institutions in differing ways, results indicated that some of them significantly influenced institutional behaviors, structures, and policies. This suggests that the role of trustees should be re-conceptualized to reflect their ability to influence higher education institutions, making them a fundamental part of the microfoundations of these institutions. 相似文献
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Timo Rantalainen Paul B. Gastin Rhys Spangler Daniel Wundersitz 《Journal of sports sciences》2018,36(17):1937-1942
The purpose of the present study was to evaluate the concurrent validity and test-retest repeatability of torso-worn IMU-derived power and jump height in a counter-movement jump test. Twenty-seven healthy recreationally active males (age, 21.9 [SD 2.0] y, height, 1.76 [0.7] m, mass, 73.7 [10.3] kg) wore an IMU and completed three counter-movement jumps a week apart. A force platform and a 3D motion analysis system were used to concurrently measure the jumps and subsequently derive power and jump height (based on take-off velocity and flight time). The IMU significantly overestimated power (mean difference = 7.3 W/kg; P < 0.001) compared to force-platform-derived power but good correspondence between methods was observed (Intra-class correlation coefficient [ICC] = 0.69). IMU-derived power exhibited good reliability (ICC = 0.67). Velocity-derived jump heights exhibited poorer concurrent validity (ICC = 0.72 to 0.78) and repeatability (ICC = 0.68) than flight-time-derived jump heights, which exhibited excellent validity (ICC = 0.93 to 0.96) and reliability (ICC = 0.91). Since jump height and power are closely related, and flight-time-derived jump height exhibits excellent concurrent validity and reliability, flight-time-derived jump height could provide a more desirable measure compared to power when assessing athletic performance in a counter-movement jump with IMUs. 相似文献
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The literature related to Borg's ratings of perceived exertion (RPE) scale has revealed inconsistencies about the strength of the relationship between ratings of perceived exertion and various physiological criterion measures, such as heart rate, blood lactate concentration, percent maximal oxygen uptake (%VO2max), oxygen uptake (VO2), ventilation and respiration rate. Using sex of participants, fitness, type of RPE scale used, type of exercise, exercise protocol, RPE mode and study quality, we undertook a meta-analysis to determine the strength of the relationship between RPE scores and the six aforementioned physiological measures. The weighted mean validity coefficients were 0.62 for heart rate, 0.57 for blood lactate, 0.64 for %VO2max 0.63 for VO2, 0.61 for ventilation and 0.72 for respiration rate. Analysis of moderator variables revealed that the following study features could account for the variation of results across studies: heart rate--fitness, type of exercise, protocol and RPE mode; blood lactate concentration--sex, RPE scale; VO2--sex, exercise type, RPE mode; ventilation--sex, RPE mode; respiration rate--exercise protocol, RPE mode. The highest correlations between ratings of perceived exertion and the various physiological criterion measures were found in the following conditions: when male participants (whose VO2 or ventilation was measured) were required to maximally exert themselves (measuring %VO2max or ventilation); when the exercise task was unusual [e.g. when participants were swimming, which is less common than walking or running (when heart rate, %VO2max and VO2 are measured)]; or when the 15-point RPE scale (measuring blood lactate concentration) was used. These findings suggest that although Borg's RPE scale has been shown to be a valid measure of exercise intensity, its validity may not be as high as previously thought (r = 0.80-0.90), except under certain conditions. 相似文献
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Research in Higher Education - For decades, science policy has been promoting interdisciplinary research (IDR), but universities have not responded uniformly. To explain this variation, we... 相似文献
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In this investigation, the graduation and persistence rates of Texas community college students by ethnic membership (i.e., White, Black, Hispanic, and Asian) for the 2000, 2004, 2005, 2006, 2007, 2008, 2009, and 2010 academic years were examined. Statistically significant differences were present between the 2000 and the 2010 graduation and persistence rates for all four ethnic groups. Trends were also revealed for the graduation and persistence rates for all ethnic groups between the 2000 and the 2010 academic years. Results were congruent with the results of other researchers concerning differences in the graduation and persistence rates between White students and their Black and Hispanic counterparts. 相似文献
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